Ncert- CLASS 6 – SCIENCE- Chapter 10: Fun with Magnets 2 Welcome to your Ncert- CLASS 6 - SCIENCE- Chapter 10: Fun with Magnets 2 1. The presence of magnetic field at a point can be detected by a compass needle galvanometer ammeter strong magnet None 2. Magnet was discovered by 3. How is a compass used to find directions? When suspended freely the compass needle aligns itself in the vertically up-down direction which gives us the perpendicular direction to the needle as north and south poles When suspended freely the compass needle starts rotating in a particular plane and the axis of rotation perpendicular to the plane gives us north and south poles When suspended freely the compass needle aligns itself in the east-west direction which gives us the perpendicular direction to the needle as north and south poles When suspended freely the compass needle aligns itself in the north-south direction which gives us the direction of the north and south poles None 4. What is the circular enclosure that the magnetic compass is placed in ? aluminium case nickel case stainless steel case iron case None 5. Which of the following will help demagnetizing a magnet ? Hammering the magnet Putting in contact with iron Cooling it Putting it in the water None 6. Which shape of magnet is used in electric bell? Cylindrical magnet Ball-ended magnet Bar magnet Horse-shoe shaped None 7. _______ is the surest test of magnetism. Attraction Repulsion No change None of the above None 8. A marine compass is used to determine dip at a place determine direction determine H compare magnetic moments None 9. Which effect of force is caused by the magnetic force between a magnet and a magnetic substance? Change of chemical nature. Change of position. Change of physical state. Change of shape. None 10. The device used by sailors and navigator to know the direction is called Speedometer Wind vane Direction finder Magnetic compass None 11. The answer to which of the following options will distinguish between a magnetic material and a non-magnetic material? Does it affect the direction in which a compass needle points? Is it a conductor or an insulator? Can it be given an electric charge? Is it a metal of a non metal? None 12. Magnetic strength of the magnet is Concentrated in the centre of magnet Distributed uniformly throughout the magnet Concentrated at one of the poles of the magnet Concentrated at both the poles of the magnet None 13. What kind of magnet is used in a magnetic compass ? temporary magnet permanent magnet none of the above electromagnet None 14. The N-pole of a compass points to the .............. pole of a permanent magnet north north-east south-east south None 15. The end of a free hanging magnet which points towards North is called East pole South pole West pole North pole None 16. Which of the following is not attracted by a magnet? nickel steel cobalt bronze None 17. Complete the following statements with an appropriate word / term to be filled in the blank space(s).A compass needle is a ________ magnet : big small fieldless super None 18. The marked end of a compass needle always points directly to Earth's geographic North Pole Earth's geographic South Pole A magnet's south pole A magnet's north pole None 19. Which types of magnet have two poles close to each other? Horse-shoe magnet Electromagnet Cylindrical magnet Bar magnet None 20. How will hammering a bar magnet affect Its magnetic strength? Is likely to increase Is likely to decrease Will not change None of the above None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
